Means for uniformly distributing powdered substances.



No..838,464. v PATBNTED DEC. 11, 1906. G. 0. SGHULTZE &: 0L SGHUSSLER.MEANS FOR UNIFORMLY DISTRIBUTING POWDERBD SUBSTANCES.

APPLICATION FILED SEPT. 'l,. 1906.

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UNITED STATES PATENT OEEIOE.

GUSTAV OSKAR SCHULTZE, OF VISLANDA, SWEDEN, AND OTTO sOHUssLEE, OF KTTBUs, GERMANY.

MEANS FOR UNIFORIVIL Y DISTRIBUTING POWDERED SUBSTANCES.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed September '7, 1906. Serial No. 333,664-

To all whom it may concern:

Be it known that we, GUSTAV OSKAR SOHULTZE, a subject of the King ofSweden, and a resident of Vislanda, in the Kingdom of Sweden, and OTTOSoHi'IssLER, a subject of the German Emperor, and a resident ofStrobitz, Kottbus, in the Empire of Germany, have invented certain newand useful Improvements in Means for Uniformly Distributing PowderedSubstances, of which the following is a specification, reference beinghad therein to the accompanying drawing.

In the manufacturing of special articles as, for instance, roofing-disksof cement having the surface colored, made close, &c.by means of asuitable substance the said substance is generally spread on the articleby means of a sieve manually operated, as by reciprocating the same. Thesaid method of spreading the substance is time-consuming, and theresults are unsatisfactory as the substance thus spread does not havethe same thickness all over.

This invention relates to means for distributing uniformly a powderedsubstance. The said means consists in a wire or sliding scraper providedwith a suitable handle adapted to be reciprocated on the bottom of asieve on which the powdered substance is spread until a layer of thedesired thickness is formed on the subjacent articleas, for instance, aroofing-tile.

Means adapted for carrying out the said method are shown in perspectivein the accompanying drawing.

a is a box or casing, the bottom I) of which consists of wire-cloth.

c is a wire or bar provided with a handle d, the whole constituting ascraper. The width of the said scraper is preferably so adapted, asshown in the drawing, that it fits snugly between the walls of the box,by which it is guided when reciprocated. The ends of the scraper bearingagainst the said walls may be provided with antifriction-rolls e. Thesaid wire or rod 0 is preferably made of a metal softer than that of thebottom I), so that the latter is worn in the slightest possible degree.When the wire 0 is worn out,

it can easily be substituted by a new one without anyconsiderableexpense. In moving the said scraper, &c., forward and backward one ormany times bearing against the bottom of the box uniform quantities ofthe powder or dust are transmitted through the sieve or scraped ofi andcaused to piss through the same, so that an equally t 'ck layer ofsubstance is always provided on the subjacent article. Although it issaid in the above description that the scraper is provided with only onewire or bar it may evidently be provided with two or more wires, &c.,mounted one behind the other, the path of the scraper being thusshortened.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is-- 1. In a distributer for coating articleswith powder, the combination, with a box having a perforated bottom, ofa scraper comprising a narrow thin straight edge of a lengthcorresponding to the interior width of the box with upturned ends, and ahandle joining the ends.

2. In a distributer for coating articles with powder, the combination,with a box having a screen-bottom, of a scraper comprising a wireforming a straight edge of a length corresponding to the interior widthof the box with upturned ends, and a handle joining the wire ends.

3. In a distributer for coating articles with powder, the combination,with a box having a bottom of screen-cloth, of a scraper comprising awire forming a straight edge of a ength corres onding tothe interiorwidth of the box, sai. wire having its ends upturned at right angles tothe straight edge, a handle connecting the wire ends, and antifrictionmembers arranged at each end of the scraper.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

GUSTAV OGKAR SOHULTZE. OTTO SOHUSSLER. Witnesses:

HENRY HASPER, WOLDEMAR HAUPT.

